1965 mustang speedometer indicates too fast.

110

Asked by GuruV7XT9 Sep 23, 2018 at 08:33 AM about the 1965 Ford Mustang Coupe RWD

Question type: General

The speedometer in my 1965 mustang indicates 10 -15 mph faster than I am actually going. The speedometer is original but at some time or other the c4 transmission has been changed out. How can I fix this problem?  thank you

3 Answers

F_O_R answered 6 years ago

Probably the wrong gear at the speedometer cable end where it attaches to the transmission.

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F_O_R answered 6 years ago

Do you have the old transmission? Get the gear from it. Summit Racing can sell you another one.

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110

GuruV7XT9 answered 6 years ago

Yes, thank you. After doing a little research I am finding that there is a complicated formula on figuring out what combination of gears will fix the problem. The only thing I don't know is how many threads are on the drive gear in the transmission. I guess I have to remove the tail shaft to find that out??

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